Magnetic ore-separator.



PATENTED JUNE 23, 1903.

K. V. A. ERIKSSON. MAGNETIC ORE SEPARATOR.

APPLIGATIQN FILED 1130.3, 1901.

3 SHEETS-SHEET 1.

N0 MODEL,

No. 731,443. PATENTED JUNE 23, 1903.

K. V. A. ERIKSSON.

MAGNETIC ORE SEPARATOR.

APPLICATION FILED D120. 3, 1901. N0 MODEL. 3 SHEETS-SHEET 2- mgz. J;

is ca. PNOTQ-UIH." wAsnmuToN n r No. 731,443. PATENTED JUNE 23, 1903. KV'. A. ERIKSSON.

MAGNETIC ORE SEPARATOR.

APPLICATION FILED DBO. 3, 1901.

N0 MODEL. 3 SHEETS-SHEET 3.

Witnesses.- L i: Z 2 F MIMIAW hw ILIMML' u Jr,-

UNITED STATES Patented J'une 23, 1903.

FFICE.

PATENT KNUT VIKTOR ARKADIUS ERIKSSON, OF FALUN, SWEDEN, ASSIGNOR TOANDERS ERIC SALWEN, OF GRKNGESBERG, SlVEDEN.

MAGNETIC ORE-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 731,443, dated June 23,1903.

Application filed December 3,1901. Serial No. 84,537. (No model.)

To all whom, it may concern.-

Be it known that I, KNUT VIKTOR ARKA- DIUS ERIKSSON, a subject of theKing of Sweden and Norway, and a resident of Falun, Sweden, haveinvented new and useful Improvements in Magnetic Ore-Separators, ofwhich the following is a specification, reference being had to thedrawings accompanying and forminga part hereof.

This invention relates to improvements in magnetic ore-separators.

The object of the invention is to provide a magnetic ore-separator whichwill be cheap to build and maintain, inasmuch as it will be simple inconstruction and economical as to the consumption of electric current,as well as reliable in its working.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

In the accompanying drawings, Figures 1 and 2 show in longitudinal andcross section a suitable constructional form of my invention, and Fig. 3shows a section on line A B inFig. 1.

Referring to the drawings, two disks 21 and 22, to which are attached anumber of magnet-poles 1 and 2, are rigidly fixed to a shaft 8,rotatably journaled in bearings 23. Each of said pole-piecesl and 2consists, preferably, of two angle-irons fixed by means of screws 24 tothe said disks 21 and 22, but may be made in any other convenientmanner. The said shaft 8 may be rotated by means of the belt-pulley 18or in any other suitable manner. Between the said magnet-poles 1 and2 isarranged a preferably water-tight separating-chamber formed by twovertical plates 3 and 4 and side walls 25 and 26.

The field-magnets of this separator are very similar to those used inthe old'Mordey alternators having rotating field-magnets and stationaryarmature, the latter corresponding to the separating-chamber of thisseparator.

The said vessel is provided with a centralcylindrical opening, throughwhich the shaft 8 and the electric winding 13 are inserted.

At the bottom the vessel is formed as a fun-' nel and provided withapipe 27, in which may be inserted a stopper 28 or the like, providedwith an outlet-opening 29. A feeding-channel 30-is arranged at the topof said vessel, the lower end of said feeding-channel entering betweenthe magnet-poles, as shown in Fig. 2. A division-wall 5, formed as aninclined channel, traverses the said feedingchannel'3O or runs at theside of the same between the magnetic field. The ends of the electricwinding 13 arecarried out through the channel 14 and connected to twoinsulated contact-rings 31, attached to the shaft 8. The electriccurrent is fed to said contactrings in Well-known manner by means ofsliding contacts 32.

The working of the apparatus is as follows: The magnet-poles 1 and 2 arerotated, for instance, in the direction of the arrow in Fig. 1, and themagnetic and non-magnetic material is fed into the separating-roomthrough the channel30. The magnetic material will be caught by themagnetic field inside the separating-chamber and be carried along untilit arrives to the channel 5, by which it will be prevented fromfollowing the magnets any further, but will be caused to slide down outfrom the apparatus, whereas the non-magnetic material will drop down tothe bottom of the separating-chamber and out through the opening 29. Ifwater be let in through the channel 30 simultaneously with-the magneticand non-magnetic material, the feeding of the water may be regulated insuch manner that the water-surface inside the separating-chamber willstand approximately in level with the center of the disks 21 22. Thewater is used in well-known manner to wash the magnetic material carriedalong in the separating-chamber. In order to keep the waterlevel at aconstant height, the separating vessel is suitably provided with anoutlet-pipe 33, through which the superfluous water flows out. Since themagnetic field inside the separating-chamber tends to prevent themagnetic material in the channel 5 from sliding down in the same,awater-current may preferably be let in from above into the said channel5, the said water-current forcing the magnetic material out from theapparatus. For this purpose a water-pipe, 3a is introduced in the upperpart of the separating-chamber in such manner that it will throw acurrent of water into the said channel.

.Having now described my invention and how it may be carried out, what Iclaim, and desire to secure by United States Letters Patent, is-

1. In amagnetic ore-separator the combination of, a separating-chamberformed by vertical plates, a transverse opening in saidseparating-chamber, a rotatable shaft inserted through said opening,means for rotating said shaft, an electric winding on said shaft, meansfor feeding electric current to said winding, two disks rigidly fixed tosaid shaft, a number of magnet-poles on each of said disks adapted torun close to the walls of said separating-chamber, a feeding-channelentering with its lower end between the said magnetspoles, and adischarge-channel for the magnetic material traversing the saidfeeding-channel, substantially as and for the purpose set forth.

2. In a magnetic ore-separator the combination of, a separating-chamberformed by vertical plates, a transverse opening in saidseparating-chamber, a rotatable shaft inserted through said opening,means for rotating said shaft, an electric Winding on said shaft, meansfor feeding electric current to said winding, two disks rigidly fixed tosaid shaft, a number of magnet-poles on each of said disks adapted torun close to the walls of said separating-chamber, a feeding-channelentering with its lower end between the said magnet-poles, adischarge-channel for the magnetic material traversing the saidfeedingchannel, a water-pipe adapted to let in water from above intosaid discharge-channel, an opening at the bottom of saidseparatingchamber, a stopper in said opening, an outlet-opening in saidstopper and an overflowpipe in said separating-chamber, substantially asand for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

KNUT VIKTOR ARKADIUS ERIKSSON.

Witnesses:

GERDA RINDKVIST, GUSTAF ISFALT.

